JVC AV-48P777/H Service Manual page 42

Measuring
Item
instrument
SUB COLOR / Remote
SUB TINT control unit
adjustment (1)
SUB COLOR / Signal
SUB TINT generator
adjustment (2)
Oscilloscope
Remote
control unit
W
Setting item
Signal
NTSC
1-42 (No.YA455)
Test point Adjustment part
[1.Adjust]
S003 : COLOR
S004 : TINT
TP-R [1.Adjust]
[R CRT S003 : COLOR
SOCKET PWB] S004 : TINT
TP-E (GND)
(-)
0
(+)
Y (W-Y) R (W-R)
Setting value [V]
STANDARD
S003(W-R) S004 (W-Y)
+11 0
Description
[ Method of adjustment without measuring instrument ]
(1) Receive any broadcast.
(2) Select STANDARD mode with [VIDEO STATUS]
key.
(3) Enter TV-Micro Service [1. Adjust].
(4) Select <S003> (COLOR) and <S004> (TINT).
(5) Set the initial setting value.
(6) If the color or tint is not the best with the initial setting
values, make fine adjustment until you get the best
color or the best tint.
(7) Press [MUTING] key to memorize the set value.
[ Method of adjustment with measuring instrument ]
(1) Receive NTSC color bar signal (include 75% white).
(2) Select STANDARD mode with [VIDEO STATUS]
key.
(3) Connect the oscilloscope to TP-R.
(4) Enter TV-Micro Service [1. Adjust].
(5) Select <S003> (COLOR) and <S004> (TINT).
(6) Adjust <S003> and <S004> to be following setting
value. (Refer to the table)
(7) Press [MUTING] key to memorize the set value.
(8) Confirm that LOW-LIGHT is not different after
adjusting. If it is green or magenta, to adjust LOW-
LIGHT again. If adjust again, to set offset value
again.